package com.lanzou.common;

public class Constants {


    public static class System{

        public static

    }
//定义一个地址常量
final String ADDRESS = "123 Main Street";

    public static void main(String[] args) {
        int sum = 0;
        for (int i = 1; i <= 100; i++) {
            sum += i;
        }
//        System.out.println("The sum is: " + sum);
    }





}
